Improve tests for JavaScript (#3496)

- Upgrade dependencies
    - chai (3.5.0 -> 4.0.1)
    - chai-enzyme (0.6.1 -> 0.7.1)
    - sinon (2.2.0 -> 2.3.2)
- Change extensions from .jsx to .js
- Don't assign `React` to `global`
- Check code format using ESLint

1 files changed, 0 insertions, 27 deletions

diff --git a/spec/javascript/components/display_name.test.jsx b/spec/javascript/components/display_name.test.jsx
deleted file mode 100644
index 7072e653e..000000000
--- a/spec/javascript/components/display_name.test.jsx
+++ /dev/null
@@ -1,27 +0,0 @@
-import { expect } from 'chai';
-import { render } from 'enzyme';
-import Immutable  from 'immutable';
-
-import DisplayName from '../../../app/javascript/mastodon/components/display_name'
-
-describe('<DisplayName />', () => {
-  it('renders display name + account name', () => {
-    const account = Immutable.fromJS({
-      username: 'bar',
-      acct: 'bar@baz',
-      display_name: 'Foo'
-    });
-    const wrapper = render(<DisplayName account={account} />);
-    expect(wrapper).to.have.text('Foo @bar@baz');
-  });
-
-  it('renders the username + account name if display name is empty', () => {
-    const account = Immutable.fromJS({
-      username: 'bar',
-      acct: 'bar@baz',
-      display_name: ''
-    });
-    const wrapper = render(<DisplayName account={account} />);
-    expect(wrapper).to.have.text('bar @bar@baz');
-  });
-});